Heap-based buffer overflow in the is_gpt_valid function in fs/partitions/efi.c in the Linux kernel 2.6.38 and earlier allows physically proximate attackers to cause a denial of service (OOPS) or possibly have unspecified other impact via a crafted size of the EFI GUID partition-table header on removable media.
http://downloads.avaya.com/css/P8/documents/100145416
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061236.html
http://openwall.com/lists/oss-security/2011/04/12/17
http://openwall.com/lists/oss-security/2011/04/13/1
http://rhn.redhat.com/errata/RHSA-2011-0833.html
https://bugzilla.redhat.com/show_bug.cgi?id=695976
http://securityreason.com/securityalert/8238